The Supreme Court has held in Layade v. Panalpina (1996) 6 NWLR (Pt. 456) 544 at 558; (1996) 7 SCNJ 1 at 14-15 per Adio. J.S.C., as follows and I quote; ”The general rule is that where parties have embodied the terms of their agreement or contract in a written document, as it was done in this case, extrinsic evidence is not admissible to add to, vary, subtract from or contradict the terms of the written instrument … So, where the parties enter into a contract, they are bound by the terms of that contract and it is unfair to read into such a contract the terms on which there was no agreement.”
EVIDENCE ON MATTER NOT PLEADED
It is settled that evidence led on any matter not pleaded goes to no issue and ought to be disregarded when giving judgment. – Kutigi JSC. Amadi v. Nwosu (1992)